Just as you have to provide documents to the other party or parties, they have to provide the same documents to you (within the same time-frame). So you should receive copies of the other parties’ statements, expert’s reports, diagrams, etc at least five clear business days before the hearing.
In Development Act appeals, the planning authority (the council or the Development Assessment Commission) also has to provide you (and the court) with ‘copy documents’ five clear business days prior to the hearing. These are copies of the documents that were used in assessing the development application.
If you don’t get these documents you should contact the court. They may help to chase them up. When you do get the documents, you should read them carefully.